SOLVED Update Firmware continue after install 12.31, now is all working, Mount Disk, Recovery itc....
No need any Clean install of SO, no need nothingh more of install 12.30 setup.exe, Update from "AUTOUPTDATE" button, "Update Important Files", Install "exFAT Paragon" program....
IMPORTANT, PUT IN EXCLUSION LIST OF YOU AV and FIREWALL all .exe file of Atf, Paragon sw, Drivers of exFAT Paragon itc...
Just connect EMMC press MOUNT button and UNceck Read Only...now can copy/paste you files in any folder you choise renamed, all here.
BR
allumts